ruffed \ruffed\, a.
   furnished with a ruff.
   1913 webster

   ruffed grouse zool., a north american grouse bonasa
      umbellus common in the wooded districts of the northern
      united states. the male has a ruff of brown or black
      feathers on each side of the neck, and is noted for the
      loud drumming sound he makes during the breeding season.
      called also tippet grouse, partridge, birch
      partridge, pheasant, drummer, and white-flesher.

   ruffed lemur zool., a species of lemur lemur varius
      having a conspicuous ruff on the sides of the head. its
      color is varied with black and white. called also ruffed
      maucaco.
      1913 webster
see also:
ruffed grouse bonasa umbellus tippet grouse partridge birch partridge pheasant 
drummer white-flesher ruffed lemur lemur varius ruffed maucaco